<template>
    <div>message的值:{{ message }}</div>
    <div>obj.message的值:{{ obj.message }}</div>
</template>
<script setup>
import { reactive,toRefs } from 'vue';
const obj = reactive({message:"盛年不重来"})
let{message} = toRefs(obj)
setTimeout(()=>{
    message.value = "及时当勉励"
},2000)
</script>